I have a 2013 and my performance page still is functional, I heard if you do a Hard Reset you can fix your issue on other chats.
Hard Reset Uconnect® Instructions
A soft Uconnect® reset can resolve some minor issues, but in some cases, it’s necessary to reset the Uconnect® system to its factory settings. Following these instructions will wipe any presets that are saved to your car’s Uconnect® system:
Press the temperature up and down buttons simultaneously for at least five seconds.
Navigate the menu that comes up on the screen and choose the option that prompts you to reset to factory settings.
After choosing this option, wait about 30 seconds while the system reboots.